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Mattergrupo 1 4 c
The document discusses the distinction between homogeneous and heterogeneous mixtures, along with basic concepts of atoms, molecules, and physical and chemical changes. It also covers properties of materials, types of energy such as light and sound, and methods for harnessing energy from sources like solar panels and wind turbines. Finally, it mentions the transformation of biomass into bioenergy.
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Mattergrupo 1 4 c
- 2. MIXTURES HOMOGENEOUS WE CAN’TSEE THE SEPARATE SUBSTANCES HETEROGENEOUS WE CAN SEE THE SEPARATE SUBSTANCES IN A HOMOGENEOUS MIXTURE THERE ARE… SOLUTION SOLVENT AND SOLUTE
- 3. ATOM IS THESMALLEST PARTICLE OF MATTER IS EXTREMALLY SMALL AND YOU NEED A ESPECIAL MICROSCOPE SCIENTISTS HAVE FOUND APPROXIMATLY 100 DIFERENT ATOMS EACH ONE HAS A NAME AND IS REPRESENTED BY ONE OR TWO LETTERS EXAMPLE OXIGEN (O) HIDROGEN (H) CARBON (C) GOLD (AU) IRON (FE)
- 4. MOLECULE IS WHENTWO OR MORE DIFERENT ATOMS JOINT TOGETHER FOR EXAMPLE TWO HYDROGEN (H) ATOMS AND ONE OXYGEN (O) ATOM JOIN TOGETHER TO MAKE AN (H2O) MOLECULE
- 5. PHISICAL CHANGES THE MOLECULESMOVE ABOUT BUT THEIR STRUCTURE DOESN'T CHANGE We can fold a paper and it changes its shape We can fly a kite and it changes the place We can freeze a yoghourt and it changes the state We can heat milk and it changes the temperature
- 6. CHEMICAL CHANGES Ina chemical change, new molecules are made and the matter is Rust new molecules form and make different matter Rust, burns and ferments
- 7. PROPERTIES OF MATERIAL HARD Materialsare very difficult to scratch or cut SOFTmaterials are scratched or cut easily . TOUGH materials are very difficult to break FRAGILE break easily Plastic materials are easily to bend Elastic materials go back to their shape
- 8. PROPERTIES Tough materials arevery difficult to break Fragile materials break easily Plastic materials are easy to bend Elastic materials go back to their shape after we squash or stretch them Examples: Sponge is elastic Glass is fragile
- 9. THERMAL INSULATOR AND CONDUCTORS At low temperature, for example in an ice cube, the water molecule move very slowly. At high temperature, for example in a cup of tea, the water molecules move quickly.
- 10. LIGHT ENERGY Lightenergy is the form of energy that allows us to See things because it bounces off objects and then Enter our eyes
- 11. LIGHT Artificials light sources Alight bulb, a television Screen,and a torch change electrical energy Into light energy Natural light sources Stars,a candle and a Fire change chemical energy into Light energy.all the earth`s naturals light Comes from the sun
- 13. SOLAR PANELS Solar panelsreceive energy from the sun .Solar energy is transformed into electric or heat.
- 14. Wind turbines Windturbines receive energy from the wind .wind Energy is transformed into electricity
- 15. Releasing water Releasingwater from a dam produces energy hiro Energy istransformed into electricity
- 16. BIOMASS Biomass comesfrom montly vegetable matter . When burned it produces bioenergy . This energy is transformed into electricity and heat
- 17. SOUND ENERGY SOUNDis the form of energy that allows us to hear things because it makes the air vibrations enter our ears Sound vibrations travels in waves an in all directions Sound travels very fast but much slower than ligth Examples Wood
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- 19. VIDEO OF THEUNIT
- 20. AMAYA NADIAMARCOS AND DAVID